KVM: x86/mmu: Snapshot shadow_phys_bits when kvm.ko is loaded

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Snapshot shadow_phys_bits when kvm.ko is loaded, not when a vendor module
is loaded, to guard against usage of shadow_phys_bits before it is
initialized.  The computation isn't vendor specific in any way, i.e. there
there is no reason to wait to snapshot the value until a vendor module is
loaded, nor is there any reason to recompute the value every time a vendor
module is loaded.

Opportunistically convert it from "read mostly" to "read-only after init".

Link: https://lore.kernel.org/r/20240423221521.2923759-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2024-04-23 15:15:20 -07:00

parent 52c47f5897

commit c043eaaa6b

2 changed files with 4 additions and 4 deletions

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2

arch/x86/kvm/mmu.h

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6

arch/x86/kvm/mmu/spte.c

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